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In this undated photo provided by the Opernhaus Zurich Bryn Terfel in the role of the Hollaender (Dutchman), right, and Anja Kampe as Senta, left, perform on stage during a dress rehearsal for Richard Wagner's opera "Der fliegende Hollaender" (The Flying Dutchman) at the opera in Zurich, Switzerland. (AP Photo/Opernhaus Zurich/T+T Fotografie/Toni Suter + Tanja Dorendorf)

In this undated photo provided by the Opernhaus Zurich Bryn Terfel in the role of the Hollaender (Dutchman), right, and Anja Kampe as Senta, left, perform on stage during a dress rehearsal for Richard Wagner's opera "Der fliegende Hollaender" (The Flying Dutchman) at the opera in Zurich, Switzerland. (AP Photo/Opernhaus Zurich/T+T Fotografie/Toni Suter + Tanja Dorendorf)